Open AccessCMOS impulse radio ultra‐wideband Gaussian pulse generator with variable channel and bandwidth
Author(s) -
Choi Jamin,
Kwon Ickjin
Publication year - 2016
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
eISSN - 1751-8598
pISSN - 1751-858X
DOI - 10.1049/iet-cds.2015.0229
Subject(s) - wideband , transmitter , electronic engineering , pulse generator , bandwidth (computing) , amplifier , impulse generator , pulse width modulation , bandwidth limited pulse , electrical engineering , cmos , computer science , physics , engineering , telecommunications , optics , ultrashort pulse , channel (broadcasting) , laser , voltage , jitter
A Gaussian pulse generator for an ultra‐wideband impulse radio transmitter is presented. The proposed generator is based on digital intensive circuits, and the centre frequency and bandwidth of a pulse are controlled by a digitally tunable delay circuit and pulse‐width control circuit. The Gaussian pulse is obtained by a weighted summing amplifier that is controlled by a digital switching signal without an additional LC filter. The amplifier uses a Gaussian pulse shaper that has tunable weighting factors with bandwidth control. The energy consumption of the pulse generator is 37.4 pJ/pulse, and sidelobe rejection of 20 dB is achieved without a filter.